Oil-filter



Patented May s, v1898.

UNITED 'STATES PATENT Fries.

AUGUST I-I. FRANKE, OF ST. LOUIS, MISSOURI.

vOIL-FILTER.

SPECIFICATION forming part of Letters PatentpNo. 603,327, dated May 3, 1898` Application filed October 1,1, v1897. Serial No. 654,859. (No model.)

To all whom it may concern.-v l

Be it known that I, AUGUST H. FRANKE, of St. Louis, State of Missouri, have invented certain new and useful Improvements in Oil- Filters, of which the following is a full, clear,

- and exact description, reference being had to the accompanying drawings, forming a part thereof. y l

My invention relates to improvements in oililters; and it consists in the novel arrangement, construction, and combination of parts,

as will be more fully hereinafter described,

and set forth in the claims.r

The object of my invention is to construct an oil-filter to be made of galvanized sheetiron, sheet-copper, or other suitable material provided with proper outlets, inlets, gages, fittings, &c. all for the purpose to purify and refine impure or dirtylubricating-oils or other impure or unreined oils.

, This apparatus is to be provided with a large area of heat communication to the impure or dirty oil by means of heat conducted through -air within a so-called air-jacket which surrounds the impure oil or settling-chamber from an outer so-called steam-jacket which surrounds said airjacket, the intensity of said heat communication to the impure oil to be regulated by increasing or decreasing the circulation of lair through said air-jacket and alsoby increasing or decreasing the amount of steam heat admitted into the said steamjacket. This heat communication isvto be applied in such a manner as to avoid'stirring up'l the precipitated impurities b y circulationas,

much as possible.

In carrying out this invention a large removable straining-surface, a deecting-shield, settling-chamber, filtering-chamber, and a large Referring to the drawings, Figure l is a vershowing the reservoir or tank partly in side view. Fig. 2 is a top plan view, with half in section, approximately taken on the line A A o f Fig. 1. Fig. 3 is an enlarged sectional view, with parts broken away, of the strainer and detlecting-shield. Fig. 4 is an enlarged sectional view, With parts broken away, of the outer wall and so-called air and steam jackets.

In the drawings, 1 indicates my complete invention, which consists of a lower reservoir or tank 2, in the outer surface of which'is secured in any desirable manner a sight-gage 3, clean-oil faucet 4, and a nipple 5 for use in Aautomatic-oiling systems, and in this reservoir or tank is stored and cooled the purifled oil. Upon this reservoir or tank 2 is mounted a receptacle 6, which consists of a wall 7, mountedupon and secured to an upward-ared or cone-shaped bottom 8, which is providedwith an inward flange 9 for the purpose of snuglyfitting within the 'upper` edge of the reservoir 2.

To the bottom 8 is secured in a suitable manner a cylinder or wall lO, provided near its top with holes or perforations 11, the pur- 'pose of which will be fully hereinafter described.

Within the cylinder or wall 10 is loosely placed or set a cone or hood 12, which is provided with a series of perforations 13, and

any suitable filtering material 15, such as Y purpose of maintaining a uniform pressure i on said filtering material and to make it compact to assure good work.

IOO

Upon the top of the cylinder or wall 10 is supportedthe removable strainer 17, which is composed of a solid bottomv 18 to act as a settling-surface and a foraminous or perforated wall or side 19 to act as a straining-surface, and to the under surface of the bottom of said removable strainer is secured in a substantial manner a deflecting-shield 20, which is provided near its top with perforations 2l, which is for the purpose of acting as an airvent, allowing the oil to raise to the desired height between the shield 20 and cylinder or wall l0.

On top of the receptacle G and over the removable strainer is a removable lid or cover 22 to be either fiat or slightly cone or hood shaped, and in said lid is an opening 23, through which the dirty oil may bc poured into the strainer 17 without removing the lid or cover.

In and around the wall 7 of the receptacle 6 are formed two separate beads or swages 24, one near the upper edge and one near the lower edge of said wall 7, for the purpose of strengthening and stiffening these particular parts of the wall 7 and also for the purpose of forming shoulders or projections on said wall 7, and between said two beads or swages 24 and surrounding said wall 7 is fitted and secured in a suitable manner by solder or otherwise a cylinder or casing having its edges 25 crimped in or turned ina suitable manner to form the inelosed air-space or air-chamber 2G, forming a so-called air-jacket around and attached to said wall 7. rThis inelosed air-space 2G is for the purpose of controlling the circulation of air in contact with the wall 7 between the beads or swages 24. In order to do this, an opening 27 is formed in the lower part of said jacket 25 to act as an airinlet, and the circulation of air is regulated by an adjustable outlet or valve 2S, formed at the upper portion of said jacket at the opposite side to the inlet 27. In and around this jacket or casing 25 are also formed two beads or swages 29 for the purpose of strengthening these parts of said jacket, and between which is secured another jacket or casing 30 of less width than the jacket or casing 25, and the space formed by said jacket 30 acts as an inelosed steam-space or steam-chamber 3l. The steam is communicated to said steamchamber 3l from any source through the steam-inlet 32, secured to the steam-jacket 30, and the steam circulates through said chamber and is discharged through a trap 33,formed on said jacket 30 opposite to the inlet 32, and above the trap 33 and in the upper portion of said jacket is located a relief-valve 34, which is used to allow the steam to escape should the chamber become overcrowded with pressure.

The object of the steam-jacket being placed upon and around the air-jacket is to provide a large area of low-heating surface to the receptacle or filter through the circulating air within said air-jacket.

I do not desire to limit inyself to this precise construction of removable strainer, as I may arrange the bottom to flare downwardly toward the center, the object of which is that it will cause all large and heavy impurities to settle to the bottom and in the center on account of its inclination.

The operation of myinvention is as follows: rIhe dirty waste oil is poured or fed into the removable strainer, which retains all the coarser impurities. The oil passes through the fine foraminous or perforated wall, dripping down toward the bottom of the refining or settling chamber 35, formed by the wall 7 and the cylinder l0, in such a manner that the unsettled oil is always kept away from the filtering material by the deflecting-shield 20, which is suspended from the lower surface of the removable strainer. As the oil passes down and settles in the refining or settling chamber 35 it is heated by the steamjacket with steam through the air in the air chamber or jacket, thinning the oil and making it bright and clear. The larger per cent. of the impurities left in the oil after leaving the settling-chamber, together with all the entrained water,are separated from the oil and settled on the bottom of the refining or settling chamber, from whence they are readily withdrawn through the dirt-faucets 36, located at the bottom of the refining or settling chamber $35. Of these faucets I may retain as many as deemed best. The oil after being strained, heated, and settled then gradually overflows through the holes or perforations 1l, formed in the upper side of the cylinder l0, and filters through a large area of compressed filteringmaterial and through the muslin or cloth cover over the perforated cone or hood l2 by capillary attraction and into the cone or hood through perforations 13 formed therein. After the oil passes into the cone or hood l2 should there be any further impurity it has a tendency to settle on the inclined surface, where the cone rests upon the bottom S of the receptacle. The oil, after filling a small portion of space in the hood, overflows through the nipple or tube 37, secured at the apex of the cone-shaped bottom S, and into the reservoir er tank 2, where it is delivered refined, purified, and cold at the clean-oil faucet 4.

IVhen it is desired to clean the impurities from the strainer 17, the lid or cover 22 is removed, and then the strainer, by the use of the handles 3S, is lifted out, which when removed opens the entire refining-chamber. Then by simply taking off the compressingplate the filtering material may be inspected or renewed without wasting any oil or disturbing any parts of the apparatus. \Vhen this is done, the perforated cone can be lifted or pulled out of the cylinder l0.

The strainer proper or the foraminous wall being placed at the side and not at the bottom of the removable strainer avoids clogging by the heavier impurities, which remain on the bottom and do not come in contact with the perforations.

By heating the dirty waste lubricating-oil up to about l5()O Fahrenheit and maintaining IIO this low heat within it for sixty minutes or more the volatile elements that may be contained in the oil and which have no lubricating properties are evaporated, thereby refining the oil without injury to its lubricating qualities.

The inner surface of the-steam-jacket 30 I provide with an asbestos-cement coating or other suitable coating for the' prevention of deterioration and rust and also'to reduce the intensity of the heat radiating from the steamjacket.

The object of having the heat communication to the dirty, impure, or unrefined oil placed some distance above the bottom of the settling or refining chamber is to avoid stirring up or disturbing the precipitated impurities by circulation as much as possible, as by this method the heat is not applied under nor near the settling-bottom' containing the precipitated or settled impurities.

Havingfully described my invention,what I claim, and desire to secure by Letters Patent, is-

1. In an oil-filter, an outer wall, a bottom attached to said outer wall, an inclosing or jacketing wall surrounding and attached to the outer side of said outer wall forming an inclosed air-chamber or air-jacket around the outer side of the said outer wall, one or more openings near the upper and one or more openings near the lower edge of, and in the said inclosing or jacketing wall and communicating with the upper and lower parts of the said inclosed air-chamber, an incasing wall of less width than the said inclosing or jacketing wall, surrounding and attached to the outer side of, and between the said upper and lower openings in the said inclosing or jacketing wall toV form Va steam chamber around the outer side of said inclosing or jacketing wall, a steam-inlet fitting, an outlet-check and a relief-valve lattached to said incasing wallv and in suitable communication with the said steam-chamber, all for the purpose to adj ustably reduce the intensity of the heat communicated to the oil within the said outer wall-by the steam heat-within the said steam-chamber, substantially as shown and for the purpose set'forth and specified.

2. In an oil-filter, an upper tank resting on a lower tank or reservoir, said upper tank having an upward-flared bottom, an outer wall, attached to the said bottom, an inner wall having openings near its upper-edge, a strainer resting on the upper edge of said inner wall, a deflecting-shie'ld attached to said strainer and suspended in the chamber formed between said outer wall and said inner wall, saidV outer wall to have formed in and around it one swage near its lower'edge and one swage near its upper edge for the purpose to strengthen these parts of said outer wall and for the purpose to form shoulders, an -inclosing wall its upper edge and also lower edge are turned inwardly and'form connecting-walls attached to and surrounding the outer side of the said outer wall and between the said upper and lower swage form.- ing an air-chamber; to have one bead near the upper edge of, and in and around the said inclosing wall and one bead in and around and 'near the lower edge of the said inclosing wall, suitable openings above the said upper bead and in the said inclosing wall and'suit'- able openings below the said lower bead and in the said inclosing wall, a casing attached to and surrounding the outer side of the said inclosing wall and between the said upper and lower beads, forming a steam-chamber, a steam-inlet opening, outlet-opening and relief-opening in said casing, substantially as shown and for the purpose as set forth.

3. In an oil-Iilter having a receptacle mounted upon a reservoir, said receptacle provided with an inclined or cone-shaped bottom, a cylinder or wall mounted upon said bottom, said cylinder provided near its top with perforations, a cone or hood placed within said cylinder and resting upon the inclined bottom, filtering lnaterial placed within said cylinder on top of said cone, a removable strainer providedwith a deflecting-shield placed upon said cylinder, substantially as shown and for the purpose set forth.

4. In an oil-filter composed of a receptacle having an inclined bottom, a tube or nipple placed in said bottom at the apex thereof,said nipple used for the purpose of delivering the oil'from the filter into the reservoir, a cone or hood removably mounted upon said bottom over the nipple, said cone provided with IOO perforationsand covered with brous cloth which is for the purpose of preventing any part of the filtering material passing through the perforated cone, a cylinder mounted upon said bottom and surrounding said cone, said cylinder provided with perforations which are for the purpose of allowing the oil to pass into said cylinder and into filtering material placed therein, a removable strainer placed upon said Qylinder,a deflecting-shield carried by said strainer and extending downwardly into and around into the reiining or settling chamber, saidv delecting-shield acting as a Vdivision-Wall preventing the dirty oil from passing through the perforations in the cylinder until it is settled or reined, and reaches the lower end of said defiecting-shield, an airjacket formed on the outer surface of and surrounding said receptacle and a steamjacket mounted on the outer surface of and surrounding the air-jacket which is for the purpose of communicating a low degree of heat to the oil in the receptacle, substantially as shown and for the purpose set forth.

5. In an oil-lter having a receptacle provided with .a steam-jacket, an air-jacket interposed between the steam-jacket and receptacle and surroundin g said receptacle, the airjacket provided with means for regulating the heat in said air-jacket by increasing or decreasing the circulation of air within said air-jacketby increasing or decreasingthe air IIO inlet and outlet openings, said steam-jacket being of shorter width than the air-jacket, and is provided with steam through its inlet, a cylinder secured to the bottom of said receptacle a cone placed in said cylinder, said cone provided with perforations and covered with fibrous material, filtering material packed in said cylinder and over the cone, and held compressed bya compressing-plate, a removable strainer provided with a perforated side or wall and solid bottom placed and resting upon the said cylinder, said strainer supporting a defieeting-shield secured to the bottom, and extending downward acting as a division-wall in the refining-chamber for the purpose as shown and described.

6. In an oil-filter having a receptacle provided with an inclined bottom designed for strength and provided at its apex with a tube or nipple, a division-wall or cylinder secured to said bottom and extending upwardly and provided with perforations, said divisionwall or cylinder forming a refining or settling chamber between it and the wall of the receptacle, faucets secured to said receptacle in communication with the lower or bottom edge of the settling-chamber, au air-jacket formed on the side of said receptacle and interposed between the steam-jacket and receptacle,the steam-jacket adapted for the purpose to heat the air in said air-jacket which air if' freely circulating will communicate low heat to the oil in the refining-chamber, a deflecting-shield extending into said refiningchamber and secured to a strainer, said strainer removably mounted upon the cylinder substantially as shown and for the purpose set forth. i

7. In an improved oil-filter, having a receptacle provided with an air and steam jacket on its side, said air-jacket interposed between the steam-jacket and receptacle, said air-jacket being of greater Width than the steam-jacket and provided with means to regulate the circulation of air through said air-jacket, said steam-jacket coated on its inner surface with an asbestos cement or other coating,for the prevention of deterioration and for the purpose of decreasing the intensity of heat through its Walls, said receptacle provided with an inclined bottom having an outlet at its apex, a division-Wall or cylinder secured to said bottom, and provided with perforations, a perforated cone inovably mounted in said cylinder and resting on the bottom, a cloth or fibrous material placed over said cone, filtering material tightly compressed in said cylinder and over the clothcovered cone, a compressing plate placed upon said material,a movable strainer mounted upon said cylinder, said removable strainer having a solid bottom and perforated wall, a defiecting-shield carried by said strainer, and extending into the refining-chamber, substantially as shown and for the purpose set forth.

In testimony whereof I afix my signature in the presence of two Witnesses.

AUGUST Il. FRANKE. Witnesses:

ALFRED A. EroKs, GEO. F. LANE. 

